Process of heating furnaces.



c'. H. K'O'HN.

PROCESS OP HEATING 'FURNAGES.

K APPLICATION FILED JULY 15, 1909.

980,797, 1 Patented. 13,113, 1911. v

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admitting of na TED s'rAEs CLAUS HINEICH KHN, or STADE, GERMANY.

. Specification of Letters Patent.

rEocEss or HEATING EURNACES.

Application tiled July 15, 1909. Serial No. 507,837.

which the following is a specication. .The subject-,matter of Zinyinventionis a processof heatingv furnaces by means of tar and other heavy hydrocarbons, ymy rocess multaneously o tained.

My process is substantiallyfcarried into practice as follows: Tar or a similar heavy hydrocarbon is pumped through a systemof coils which is heated byhot gases and converted into spray by asprayer. The vapors' are conducted thence to the furnace `and pitch or other residue flows away from the sprayer to collectin tanks. Both. operations conducted separate y have been known here! tofore. Obtaining pitch by atomizing tar is also well-known, but the vapors produced are precipiatted and not burned. Theassociation of the two above mentioned, wellaccompanying drawing showing one .constructional form of apparatus for carrying known methods `results in the Process according to my invention andthe technical eect of the invention oil firing, pitch be- .ing obtained simultaneously.

In order that my invention may be clearly understood reference will be made to the the same into practice.

In said drawing: Figure 1 is a vertical longitudinal section, and Fig. 2 a top plan View of .said apparatus.

Referring to the drawing, tar or other heavy hydrocarbon is'foroed by a pump through the worm w in the vessel a and thence to the worm b 'built in the'mann'er of a superheater in the flues of the steam boiler e where it obtains its vapor-ization tempera' ture of about 300 C.`or a higher tempera: ture and is Supplied thence to the sprayer c nhere it is converted-into spray or atomlze -v The vapors pass into. the furnace d and areburned here in the well-known manner. The hot pitch obtained by precipitation in the sprayer c leaves said sprayer through the pipe s and fiows continuously through the vessel a whence it flows by mea`ns of pipe t to collecting tanks not shown in the itch-likeresidu'es being siis started. vThe vapors which form during drawing. In vessel fr are arranged parti- -tions' or transverse members which compel the pitch to pass along ya step-like' course so that the worm in vessel a remains for a somewhat long time in contact with the hot pitch and is highly heated; in this manner the tar `or other fuel is heated .preliminarily vto about 150o C. When such a plant is started Working the tar must, of course, be heated in a separate auxiliary furnace X (Fig. 2) which 1s shut down a short time after it the conversin off the tar into spray may, if desired, be partially conducted to a contion and furnaceapparatus is produced.

' I claim: i

1. The herein.described recess of heating furnaces by means' o tar and other heavy hydrocarbons, whichconsists in pre- ]Pa'tented J an. 3, 1911.

densation plant so that a common distillaliminarily heating the fuel, -in then heating ,the fue] to a higher temperature by means of hot gases, whereby a portion of the heated fuel is vaporized, in atomizing the heated charged, in conduetin the vapors into the furnace and burning te same, and in separately conducting away the said residue.

2. The herein described process of heating furnaces by'means of tar and other heavy hydrocarbons, which consists in raising the fuel to or above its vaporization temperature, in atomizing the heated fuel, .whereby -a -pitch-like residue is precipitated and .hydrocarbon vapors are produced, in conducting the 'vapors into the furnace and burning the same,and in separately conducting away the.hot residue and heating the cold fuel therewith.

3. The herein' described process of heat- B0 fuel, whereby a pitch-like `residue is precipit'ated and hydrocarbon vapors are dising furnaces by means4 of tar, which' consists in prelimlnarily heating the fuel, in then further heating the fuel to or above its vaporization temperature, in atomizing-the heated fuel, whereby pitch`is precipitated and hydrocarbon vapors are produced, in conduotin the vapors into the furnace and burning lt e same, and in separately conducting aw'ay the hot pitch and .employing 4.it for preliminar-il heating the fuel.

,4. The herein escribed process ofheating furnaces by means of'- tar, which consists `in heating the fuel by means of hot gasesto or above its vaporization temperature, in atomizing the heated fuel, whereby pitch iscprecipitated and hydrocarbon vapors are pro need, in conducting the vapors into the furnace and burningl thc same, and in separately conduct-ing avvaythe hot pitch and causing it to travel in close .proximity to the cold fuel so that the latter is heated thereby.

5. rlhe herein described process of heating furnaces by means of tar and other heavy hydrocarbons, which consists in raising the fuel to or above its vaporization temperature, in atomizingr the heated fuel, whereby a pitch-like residue is precipitated and hydrocarbon vapors are produced, in conducting the vapors into the furnace and burning the same, and in separately conducting away the said resid-ue.

6. The herein described process of heating furnaces by means of tar and other heavy hydrocarboiis, Which consists in preliminarily heating the fuel7 then further heating the fuel to or above its`vaporization temperature, in atomizing the heated fuel, whereby itch-like residue is precipitated and a hydiocarbon vapors are produced, in conducting the vapors into the furnace and burning the same, and in separately conducting away the said residue.

In Witness whereof I have hereunto set my h'and in presence of tvvo Witnesses.

CLAUS HNRICH KUHN.. lVitnesses c I HENRY HAsrnn, WoLDEMAn HAUPT.` 

